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April 19, 2014

Homework Help: biochem

Posted by amy on Saturday, September 10, 2011 at 6:40pm.

I need to create a 100ml buffer with a pH of 4.00 using 0.100M Benzoic acid (pKa = 4.20)and 0.180M sodium benzoate. What volume of each material do I need to make this buffer? I think I need to use pH=pKa + log(A/HA)but am not sure if that is correct. Any help would be appreciated.

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